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Page 19 of 23 <br />Appendix 1 <br />dicamba is very eff'ecdve when applied during the early pre-bud stage (late May through early June) <br />Glyphosate at 1.5 Ib. ai/acre applied during the flower stage will provide good control of hoary cress. <br />Picloram does not control Hoary cress. <br />MANAGEMENT <br />Establishment of selected, aggressive grasses can be an ef~'ective cultural control of field bindweed. Contact <br />your local Colorado State University Extension otFice or Natural Resources Conservation Service office for <br />seed mix recommendations. Good grazing management will stimulate grass growth and keep pastures <br />healthy. Healthy pastures may be more resistant to field bindweed invasion. Bare spots caused by <br />overgrazing are prime habitat for weed infestations. <br />Mechanical and Control of Field Bindweed <br />Cutting, mowing, or pulling has a negligible effect unless the plants are cut below the surface in the early <br />seedling stage. Well-established populations have a large seed bank in the soil that can reanain viable for <br />over 40 years. <br />Chemical Control of Fidd Bindweed <br />The following are recommendations for herbicides that can be applied to range and pasturelands. Optimum <br />results occur when the plants have recently received moisture and are actively growing <br />Herbicide hate Application Timing/Comments <br />Clarity + 2,4-D Amine 1 qt./acre for each product Spring- at or just after full-bloom <br />or and/or fall. <br />1 oz/gal water for each product DO NOT apply when outside <br />temperatures will exceed 85 <br />degrees. <br />DO NOT appl}' near or under <br />• ~ trees or where soils have rapid <br />~ nneabilit or where water level <br />Field bindweed <br />